#include <stdio.h>
#include <ctype.h>
#include <string.h>
int main() {
  char s[1000];
  gets(s);
  char t[1000];
  int offset = 2;
  int i = 0, len = strlen(s);
  for (i = 0; i < len; i++)
    if (!isalpha(s[i]))
      t[i] = s[i];
    else if (isupper(s[i]))
      t[i] = (s[i] - 'A' + offset) % 26+'A';
    else
      t[i] = (s[i] - 'a' + offset) % 26+'a';
  t[i] = 0;
  puts(t);
  return 0;
}
